Natvig, B.J.: A Large Angle - large Displacement Analysis Method for Marine Risers "ASME Symposium on Computational Methods for Offshore Structures" November 1980 and INTEMARITEC 1980 in Hamburg, September 1980

Natvig, B.J. and Almeland I.B.: Structural Integrity Verification of the "Structural Integrity Verification of the First Aker H-4.2 The fifth OMAE (ASME) Symposium. Tokyo, April 1986, at the Offshore and Arctic Engineering Seminar in the Science Town, Korea